"Will my dissertation end up being about the Twitter that was, rather than whatever it is in the process of becoming?" Bonnie Stewart looks at the decline of Twitter not just as an isolated event but as part of a wider pattern. "Twitter As We Knew It (TM) as a representation of an era, a kind of practice. At the core, it is about the ebbing away of networked communications and participatory culture," she writes. But more: "The sense of participatory collective – always fraught – has waned as more and more subcultures are crammed and collapsed into a common, traceable, searchable medium." Image: The Atlantic, A Eulogy for Twitter.